Grain-binder.



C. W. ROBINSON.

GRAIN BINDER.

APPLICATION FILED AUG.29, I913.

Patented Jan. 9, 1917.

messes fiW c D m m m H u w a m a UIQIID 8A FATNT OFFIQ Q CHARLES IV. ROBINSON, F HAMILTON, ONTARIO, CANADA, ASSIGN'OIR, BY MESNE ASSIGNMENTS, TO INTERNATIONAL HARVESTER CORPORATION, A CORPORATION OF NEW JERSEY.

GRAIN-BINDER.

Specification of Letters Patent.

Patented Jan. 9, 1217.

To all whom it may concern Be it known that I, CHARLES l/V. ROBINSON, a citizen of the United States, residing at Hamilton, in the county of VVentworth and Province of Ontario, Dominion of Canada, have invented certain new and useful Improvements in Grain-Binders, of which the following is a full, clear, and exact specification.

My invention relates to grain binders, and comprises improvements in tripping mechanism forming a part of the associated mechanism of this class of machine; the object of my invention being to provide amechanism efiicient in operation, readily adjusted to meet the various requirements in the operation of the machine, and capable of yielding under excessive or abnormal conditions. These objects are obtained by means of mechanism, one embodiment of which is illustrated in the accompanying drawings, in which Figure 1 is an end elevation of a grain binder having my invention forming a part thereof; Fig. 2 is a top plan view of Fig. 1; Fig. 3 is a side elevation of a trip stop forming an essential element of my invention; and Fig. 4; is a top plan view of Fig. 3.

The same reference characters designate like parts throughout the several views.

1 represents a part of the main frame of a grain binder sufficient to illustrate the operation of my invention, and having a packer shaft 2, a needle shaft 3, a knotter driving shaft 4, a knotter shaft 5, and a tripping and compressor shaft 6 journaled thereon.

7 represents the cam wheel secured to the knotter shaft 5, 8 the compressor lever pivoted upon the binder frame and having the roller 9 upon one end adapted to engage with the cam rim 10 forming part of the wheel 7, and its opposite end connected with the tripping and compressor shaft 6 by means of a link 11.and a yoke member 12, a compression spring 13 surrounding the link and yieldingly resisting a rocking movement of the shaft 6 in one direction, all of the foregoing parts being common in this type of machine.

14 represents a trip stop loosely mounted upon the needle shaft 3 and having a tail member 15 integral with the stop and adapted to engage with ii toe member 16 in tegral with the lower end of the yoke member 12, a barrel member 17 adapted to slidably receive a spring-pressed plunger having a head portion 18 and a reduced shank portion 19 that is threaded at its free end and slidably received by an opening in the cross wall 20 of the barrel member, and 21 represents an adjusting nut whereby the operative length of the stop may be controlled, the plunger being yieldingly held toward an operative position by means of a coiled spring 22 encircling the reduced end of the plunger and operative between the cross wall 20 and a shoulder portion 23 in a manner to press the plunger outward, and 24: represents a pin carried by the plunger and received by a longitudinally disposed slot 25 in the side wall of the barrel member 17, the pin being operative to limit a sliding movement of the plunger in the direction of the operative force of the spring 22.

26 represents a laterally extending ear member disposed at one side of the barrel member and having an opening that slidably receives the body portion of a link member 27, one end of the link being pivotally connected with the needle crank 28, the movement of which is controlled in a well-known way by means of the pitman 29 connecting it with the cam wheel 7 30 represents a coiled spring carried by the link 27 and operative between the ear member 26 and an adjusting nut 31 threaded upon the free end of the link, the spring being operative to yieldingly control an angular movement of the stop relative to the needle crank.

32 represents a common form of clutch controlling pawl that coacts with a driving member 33 secured to the packer shaft 2 and controlled by the trip stop in a well-known termined degree of angular movement,

carrying the trip stop with it, and as the needle shaft returns to its initial position,

an ear member 3 1 integral with the binder frame engages with the ear member 35 forming part of the trip stop, in a manner to limit the action of the spring 30.

The. utility of my invention is the readily adjustable means for controlling the operative length of the trip stop and the means permitting the stop to yield automatically against the. shock of the binder coming home, and insuresthat the roller 9 will properly engage with the stop portion 36 of the cam rim 10, as shown in Fig. 1.

While I have in this application described one form which my invention may assume in practice, it is to be understood, of course, that the embodiment shown herein for purposes of illustration is susceptible of modification without departing from the spirit of the invention.

hat I claim as my invention, and desire to Secure by Letters Patent, is:

1. A trip stop for binders comprising a body portion and a head portion reciprocable with respect to the body portion and adapted to engage a movable part of the binder mechanism.

2 A trip stop for binders comprising a body portion and a yieldingly mounted head portion reciprocable with respect to the body portion. 7

3. A trip stop for binders comprising abody portion and a yieldingly mounted head portion reciprocable with respect to the body portion, and means for adjusting the amount of yielding thereof.

4:. A trip stop for binders comprising a body portion and a yieldingly mounted head portion reciprocable with respect to the body portion, and means including a slot and pin connection intermediate said head and body portion for limiting the movement of the former.

5. In combination, a rotating clutch member, and an oscillating spring controlled trip stop comprising a body portion and a head portion reciprocable with respect to the body portion and disposed in the path of said clutch member.

6. In combination, a rotating clutch member, and an oscillating spring controlled trip stop comprising a body portion and a head portion, said head portion being yieldingly mounted on said body portion and engageable with said clutch member and movable in a path substantially tangential to the path thereof. 7

7. In a grain binder, in combination, a tripping mechanism including a trip stop, and a clutch mechanism including a clutch controlling pawl, said trip stop comprising a body portion and a resiliently mounted head portion reciprocable with respect to the body portion, said head portion cooperating with said pawl in controlling said clutch mechanism.

8. A grain binder having, in combination, a tripping mechanlsm including a trlp stop, and a clutch mechanism including a clutch controlling pawl, said trip stop comprising a body portion and a head portion reciprocable with respect to said body portion, said head portion being adjustable relative to said body portion and cooperating with said clutch pawl in controlling said clutch mechanism. 7

9. A grain binder having, in combination, a tripping mechanism including a trip stop and a clutch mechanism including a clutch controlling pawl, said trip stop being provided with a spring controlled longitudi nally slidable head cooperating with said pawl in controlling said clutch mechanism.

10. A grain binder having, in combination, a tripping mechanism including a trip stop and a clutch mechanism including a clutch controlling pawl, said trip stop being provided with an adjustable spring controlled longitudinally slidable head engageable with said pawl in controlling'said'clutch mechanism. 7 11. A grain binder having, in combination, a tripping'mechanism including a trip stop and a clutch mechanism including a clutch controlling pawl, said trip stop having a barrel formed portionand a. clutch controlling head member slidably received by said barrel portion and engageable with said clutch pawl in controlling mechanism.

12. A grain binder having, in combination, a tripping mechanism including a trip stop and a clutch mechanism including a clutch controlling pawl, said trip stop being provided with an adjustable sliding head engageable with said clutch pawl in controlsaid clutch ling said clutch mechanism, and means for limiting a. sliding movement of said head in one direction. 7

13. A grain binder having, in combination, a tripping mechanism including a trip stop and a clutch mechanism including 'a clutch controlling pawl, said trip'stop having a barrel portion, a clutch pawl engaging member slidably received by said barrel portion, and a pin carried by said pawl engaging member engageable with saidjbar rel portion to limit a sliding movement of said pawl engaging member in one direction.

14. A grain binder having, in combination, a tripping mechanism including a trip stop and a clutch mechanism, said trip stop 7 being automatically extensible and retractile and cooperating with the clutch mechanism. V V

15. A grain bind'er'having, in combination, a tripping mechanism including a trip stop and a clutch mechanismincluding a clutch controlling pawl, said trip stop having a barrel portion, a clutch pawl engaging member slidably received by saidbarrel portion, a pin carried by said pawl engagof movement of said pawl engaging meming member engageable with said barrel porher in the same direction.

tion in a manner to limit a sliding move- In testimony whereof I aflix my signature ment of said pawl engaging member in one in the presence of two Witnesses.

direction, a spring carried by said barrel CHARLES W. ROBINSON. portion operative to move said pawl engag- Witnesses:

ing member in the same direction, and sup- A. W. TORY,

plemental means for controlling the limit G. J. KELDAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

